Randolph first claimed that the pair were playing on the porch and locked themselves in the car, where she found them unresponsive and smashed a window to get to them.

Later, she told investigators that she had found them playing in the car and they refused to get out. So to teach them a lesson she shut the door, but believed he daughter knew how to get out of the car

She then allegedly went inside the house and napped for several hours before returning and finding the children unresponsive. The temperature that day was in the mid-30s, causing heat the inside of the closed car to build and cause organ failure leading to death.

According to figures from Kidspot, on a 32 degree day it can take as little as 5 minutes for temperatures to reach 65 degrees. Exposure to temperatures of over 40 degrees is enough to cause serious brain and kidney damage, which can prove fatal.